Alright, let's work through 3978 times 1563 step by step
3978 × 1563 = 1563 × (3978)
+ 1563 × 8 producing 12504
+ 1563 × 70 what gives us 109410
+ 1563 × 900 that is equal 1406700
+ 1563 × 3000 what gives us 4689000

= 6217614
